fs-extra contains methods that aren't included in the vanilla Node.js fs package. Such as mkdir -p, cp -r, and rm -rf.
Streams3, a user-land copy of the stream library from Node.js
A tiny wrapper around Node.js streams.Transform (Streams2/3) to avoid explicit subclassing noise
Simplified HTTP request client.
Promise based HTTP client for the browser and node.js
small debugging utility
Higher-order functions and common patterns for asynchronous code
Fast, unopinionated, minimalist web framework
Full featured Promises/A+ implementation with exceptionally good performance